CN111550050A - Concrete surface water spraying leveling construction process - Google Patents
Concrete surface water spraying leveling construction process Download PDFInfo
- Publication number
- CN111550050A CN111550050A CN202010447616.9A CN202010447616A CN111550050A CN 111550050 A CN111550050 A CN 111550050A CN 202010447616 A CN202010447616 A CN 202010447616A CN 111550050 A CN111550050 A CN 111550050A
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- concrete
- construction process
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- leveling
- vibrator
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04B—GENERAL BUILDING CONSTRUCTIONS; WALLS, e.g. PARTITIONS; ROOFS; FLOORS; CEILINGS; INSULATION OR OTHER PROTECTION OF BUILDINGS
- E04B1/00—Constructions in general; Structures which are not restricted either to walls, e.g. partitions, or floors or ceilings or roofs
- E04B1/16—Structures made from masses, e.g. of concrete, cast or similarly formed in situ with or without making use of additional elements, such as permanent forms, substructures to be coated with load-bearing material
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- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/02—Conveying or working-up concrete or similar masses able to be heaped or cast
- E04G21/10—Devices for levelling, e.g. templates or boards
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
-
- E—FIXED CONSTRUCTIONS
- E04—BUILDING
- E04G—SCAFFOLDING; FORMS; SHUTTERING; BUILDING IMPLEMENTS OR AIDS, OR THEIR USE; HANDLING BUILDING MATERIALS ON THE SITE; REPAIRING, BREAKING-UP OR OTHER WORK ON EXISTING BUILDINGS
- E04G21/00—Preparing, conveying, or working-up building materials or building elements in situ; Other devices or measures for constructional work
- E04G21/24—Safety or protective measures preventing damage to building parts or finishing work during construction
- E04G21/246—Safety or protective measures preventing damage to building parts or finishing work during construction specially adapted for curing concrete in situ, e.g. by covering it with protective sheets
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- Engineering & Computer Science (AREA)
- Architecture (AREA)
- Civil Engineering (AREA)
- Structural Engineering (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- On-Site Construction Work That Accompanies The Preparation And Application Of Concrete (AREA)
Abstract
The invention discloses a concrete surface sprinkling and leveling construction process, which comprises the steps of pouring concrete on a structure, adopting an inserted vibrator to vibrate by a vibrator immediately, and enabling the concrete surface to generate floating slurry without bubbles or sinking for the vibration duration; leveling the vibrated concrete by adopting a concrete iron harrow to ensure that the elevation of the concrete pouring meets the requirement; then spraying the concrete surface by adopting an agricultural sprayer, quickly flattening the sprayed concrete by adopting a support plate, and pasting the plastic film on the concrete surface for covering and curing after flattening; the construction process solves the problem that the concrete is extremely difficult to flatten when the surface is collected and flattened, the agricultural sprayer sprays the surface of the concrete and the supporting plate flattens and pastes the film, so that the surface collecting efficiency of the concrete is greatly improved, the surface collecting effect is good, a water condition is provided for concrete maintenance, the plastic film can be well adhered to the surface of the concrete, and the quality of the concrete is further ensured.
Description
Technical Field
The invention relates to a construction process, in particular to a concrete surface watering leveling construction process.
Background
The concrete construction vibration process is adopted when the surface of concrete is collected at present, the existing concrete construction vibration process comprises the steps of collecting the surface of a plug-in vibration matching surface flat plate and using a surface vibrator, but the surface vibrator is rarely adopted for construction when the concrete is vibrated for a floor structure, and the method is labor-consuming and time-consuming, so that the collection of the surface of the plug-in vibration matching surface flat plate is the most main construction process.
The concrete is made of the original traditional sand, stone, cement and water, and the water reducing agent gradually becomes an essential component of the concrete along with the scientific progress requirement for improving various performances of the concrete, especially the strength and durability of the concrete. The strength of concrete is improved from the first generation of water reducing agents represented by calcium lignosulfonate and sodium lignosulfonate, the pore structure of the concrete is improved, the durability of the concrete is improved, and the bleeding rate is reduced; until the second generation of water reducing agent represented by naphthalene sulfonate formaldehyde condensate and aliphatic series, the water reducing rate of concrete is continuously improved, the strength of concrete is improved, the durability is improved, and the bleeding rate is slightly improved. With the research and development and progress of the water reducing agent and the consideration of the cost advantage of concrete, more than 95% of domestic concrete mixing plant enterprises adopt a third-generation water reducing agent, namely a polycarboxylic acid high-performance water reducing agent, and the water reducing agent gradually occupies the main market of concrete due to the advantages of environmental protection, no pollution, high water reducing rate, small shrinkage, good durability and the like. In particular, in recent years, the national requirements on environmental protection are more and more strict, river sand is prohibited from being randomly mined, the river sand used for concrete is gradually reduced, machine-made sand is used as a substitute, and the concrete manufactured by the machine-made sand has good workability, particularly the bleeding rate of the concrete is low, and the water retention performance is excellent. The concrete is made from four components to first and second generation additives to produce the concrete with post-retention bleeding, which brings great convenience to construction, and the workability of the concrete made from third generation additives and artificial sand in recent years is greatly improved, especially the water retention performance and the cohesiveness performance are greatly improved, and the post-retention bleeding is extremely low; because the water retention performance and the cohesiveness performance of the concrete material are good, the difficulty of surface plate surface folding is increased, the surface folding efficiency is reduced, great difficulty is brought to the surface folding for construction, and the construction speed and the surface quality are greatly reduced by adopting the traditional surface plate surface flattening and folding.
Disclosure of Invention
In order to solve the defects of the technology, the invention provides a concrete surface watering leveling construction process.
In order to solve the technical problems, the invention adopts the technical scheme that: the concrete surface sprinkling leveling construction process comprises the following steps:
a. pouring concrete onto a structure, wherein a vibrator needs to immediately vibrate by using an inserted vibrator, and the vibration duration needs to ensure that the surface of the concrete generates floating slurry without bubbles and sinks;
b. leveling the vibrated concrete by adopting a concrete iron harrow to ensure that the elevation of the concrete pouring meets the requirement; then spraying the surface of the concrete by adopting an agricultural sprayer;
c. and (4) quickly leveling the sprayed concrete by using a support plate immediately, and then covering and curing the concrete by sticking a plastic film on the surface of the concrete.
Furthermore, the insertion points of the vibrators are uniformly arranged in a quincunx shape, the vibrator moves in a sequence of a determinant, and the distance of the moving positions is not more than 40cm, so that the vibrator does not leak and does not vibrate.
Furthermore, when the agricultural sprayer is adopted to spray the concrete surface, the spraying time of the same point stays for 2-3 seconds, and the spraying needs to be uniform and not repeated.
Furthermore, the joint of the plastic film is firmly adhered, so that the strong wind is prevented from blowing off, and early shrinkage cracks of the concrete are avoided.
Further, the plastic film is a white or black plastic film.
The construction process of the concrete surface sprinkling leveling method solves the problem that the concrete has great difficulty in leveling the finished surface due to good workability, better water retention performance and extremely low surface bleeding rate of the concrete caused by the change of the raw materials of commercial concrete at present, and the plastic film is leveled by the supporting plate after the surface of the concrete is sprayed by an agricultural sprayer, so that the concrete finishing efficiency is greatly improved, the finishing effect is good, a water condition is provided for concrete curing, the plastic film can be well adhered to the surface of the concrete, and the quality of the concrete is further ensured.
Detailed Description
The present invention will be described in further detail with reference to specific embodiments.
A concrete surface watering leveling construction process is characterized in that: the process comprises the following steps:
a. pouring concrete onto a structure, wherein a vibrator needs to immediately vibrate by using an inserted vibrator, and the vibration duration needs to ensure that the surface of the concrete generates floating slurry without bubbles and sinks;
the tamping tool insertion points are uniformly arranged in a quincunx shape, the displacement is carried out in a sequence of a determinant, the distance of the displacement position is not more than 40cm, and the vibration leakage and the vibration are avoided;
b. leveling the vibrated concrete by adopting a concrete iron harrow to ensure that the elevation of the concrete pouring meets the requirement; then spraying the concrete surface by adopting an agricultural sprayer, wherein the spraying time at the same point is kept for 2-3 seconds, and the water content is required to be uniform and not repeated;
c. the sprayed concrete is quickly leveled by adopting a support plate, and the surface of the concrete is stuck by adopting a white or black plastic film for covering and curing after leveling; the joint of the plastic film is firmly adhered, so that the strong wind is prevented from blowing off, and early shrinkage cracks of the concrete are avoided.
Because the concrete raw materials of more than 95 percent of domestic concrete mixing plant enterprises all adopt the third-generation water reducing agent, namely the polycarboxylic acid high-performance water reducing agent, the workability of the concrete prepared from the third-generation water reducing agent and the artificial sand is greatly improved, particularly the water retention performance and the cohesiveness are greatly improved, and the hysteresis bleeding is extremely low, the surface viscosity of the concrete is larger, and a relatively flat plane cannot be pulled out when the surface of the concrete is pulled flat due to the relatively large cohesiveness between the surface of the jelly-shaped concrete and the supporting plate, so that the construction speed of concrete pulling flat is relatively slow, and the quality of the surface of the concrete after the surface is pulled flat is relatively poor. And the concrete adopting the third-generation water reducing agent has extremely low bleeding rate and excellent water retention performance, so that the surface drying speed of the concrete is higher, the plastic film cannot be adhered to the surface of the concrete, and the maintenance of the leveled surface of the concrete is not facilitated.
The construction process of the concrete surface watering leveling method of the invention is that after water is evenly sprayed on the surface of the concrete by an agricultural sprayer, the surface of the concrete is leveled; the sprayed water plays a role in lubricating the concrete surface leveling process, the adhesion of the concrete to the supporting plate is reduced, the supporting plate can be quickly pulled out of the flat concrete surface, the concrete leveling construction speed and the concrete surface quality after leveling and folding are greatly improved, the water is sprayed on the concrete surface, a subsequent plastic film can be better adhered to the leveled concrete surface, and the covering and maintenance effect of the plastic mold on the concrete surface is better.
According to the regulation of concrete quality control standard GB 50164-2011: the concrete mixture is strictly forbidden to be added with water in the processes of transportation and pouring forming. Because the existing specification requires concrete to be strictly prevented from adding water, engineering managers can form oriented thinking in thinking and can not add water in the construction process of the concrete. The construction process breaks through the thinking fixed mode, the surface of the concrete is leveled by the supporting plate after the water is sprayed on the surface of the concrete, and the quality of the concrete cannot be influenced by the water sprayed on the surface of the concrete because the water-retaining property and the cohesiveness of the concrete adopting the third-generation water reducing agent are high, the water sprayed on the surface of the concrete can be prevented from entering the interior of the concrete, and the quality of the concrete is ensured not to be influenced by the water spraying. And the water-cement ratio of the concrete surface adopting the third-generation water reducing agent after water spraying is increased, and is close to the water-cement ratio of the concrete surface adopting the first-generation water reducing agent and the second-generation water reducing agent and having high bleeding rate, so that the construction difficulty of flattening the concrete surface is reduced, the labor intensity is saved, the flattening efficiency is higher, the effect is better, and the quality of the concrete surface is better. The construction process controls the surface water-cement ratio of the concrete and compares the surface water-cement ratio with the state of the traditional concrete adopting the first-generation water reducing agent and the second-generation water reducing agent, so that the requirement of standard and mandatory property is met, and meanwhile, the high-efficiency construction surface contraction can be realized.
The above embodiments are not intended to limit the present invention, and the present invention is not limited to the above examples, and those skilled in the art may make variations, modifications, additions or substitutions within the technical scope of the present invention.
Claims (5)
1. A concrete surface watering leveling construction process is characterized in that: the process comprises the following steps:
a. pouring concrete onto a structure, wherein a vibrator needs to immediately vibrate by using an inserted vibrator, and the vibration duration needs to ensure that the surface of the concrete generates floating slurry without bubbles and sinks;
b. leveling the vibrated concrete by adopting a concrete iron harrow to ensure that the elevation of the concrete pouring meets the requirement; then spraying the surface of the concrete by adopting an agricultural sprayer;
c. and (4) quickly leveling the sprayed concrete by using a support plate immediately, and then covering and curing the concrete by sticking a plastic film on the surface of the concrete.
2. The concrete surface watering leveling construction process according to claim 1, characterized in that: the insertion points of the vibrator are uniformly arranged in a quincunx shape, the vibrator moves in sequence by adopting a determinant, and the distance of the moving position is not more than 40cm, so that the vibrator does not leak and does not vibrate.
3. The concrete surface watering leveling construction process according to claim 1, characterized in that: when the agricultural sprayer is adopted to spray the concrete surface, the spraying time of the same point stays for 2-3 seconds, and the water content is required to be uniform without repetition.
4. The concrete surface watering leveling construction process according to claim 1, characterized in that: the plastic film joint should be pasted firmly, prevents that the strong wind from blowing open, avoids causing the concrete to appear early shrinkage crack.
5. The concrete surface watering leveling construction process according to claim 1, characterized in that: the plastic film is white or black.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447616.9A CN111550050A (en) | 2020-05-25 | 2020-05-25 | Concrete surface water spraying leveling construction process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010447616.9A CN111550050A (en) | 2020-05-25 | 2020-05-25 | Concrete surface water spraying leveling construction process |
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| CN111550050A true CN111550050A (en) | 2020-08-18 |
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| CN202010447616.9A Pending CN111550050A (en) | 2020-05-25 | 2020-05-25 | Concrete surface water spraying leveling construction process |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108787A (en) * | 2010-12-29 | 2011-06-29 | 山西四建集团有限公司 | Construction method of ultra-high strength steel fiber concrete |
| CN109537893A (en) * | 2017-09-22 | 2019-03-29 | 上海宝冶集团有限公司 | Pouring construction method without facing layer concrete |
| CN210217176U (en) * | 2019-06-20 | 2020-03-31 | 中冶建工集团有限公司 | Concrete surface collecting device |
-
2020
- 2020-05-25 CN CN202010447616.9A patent/CN111550050A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102108787A (en) * | 2010-12-29 | 2011-06-29 | 山西四建集团有限公司 | Construction method of ultra-high strength steel fiber concrete |
| CN109537893A (en) * | 2017-09-22 | 2019-03-29 | 上海宝冶集团有限公司 | Pouring construction method without facing layer concrete |
| CN210217176U (en) * | 2019-06-20 | 2020-03-31 | 中冶建工集团有限公司 | Concrete surface collecting device |
Non-Patent Citations (2)
| Title |
|---|
| 冯敬辉: "客运专线900t预制箱梁混凝土浇筑施工工艺简介", 《甘肃科技》 * |
| 陈文建: "《建筑施工技术》", 30 June 2018, 北京理工大学出版社 * |
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Application publication date: 20200818 |
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| RJ01 | Rejection of invention patent application after publication |